class_docstr: Randomly inserts filler words and phrases in the sentence.
  Perturbation example:
  
  **Input:**
      The quick brown fox jumps over the lazy dog.
  
  **Output:**
      The quick brown fox jumps over probably the lazy dog.
code: def __init__(
      self,
      insert_prob=0.333,
      max_num_insert=None,
      speaker_ph=True,
      uncertain_ph=True,
      fill_ph=True,
  ):
      self.insert_prob = insert_prob
      self.max_num_insert = max_num_insert
      self.speaker_ph = speaker_ph
      self.uncertain_ph = uncertain_ph
      self.fill_ph = fill_ph
  
file_path: H2O/h2o_hf/helm/src/helm/benchmark/augmentations/filler_words_perturbation.py
imports: from dataclasses import dataclass
  from .perturbation import Perturbation
  from .perturbation_description import PerturbationDescription
  from random import Random
label_desc: Use image node_id 1 to create a new FillerWordsPerturbation object from inherited base classes: Perturbation with example: obj = FillerWordsPerturbation(insert_prob, max_num_insert, speaker_ph, uncertain_ph, fill_ph)